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ABSTRACT
The purpose of this study was to determine the existence of some selected physicochemical properties and microbial contaminants in underground reservoirs in Ekosodin, Benin City, and to examine their levels to see if they were high enough to affect the health of the people who lived there. In, Ekosodin, Benin City, ten (10) underground reservoirs were chosen at random. Using established techniques, water samples were taken from the underground reservoirs. The amounts of pH, temperature, total dissolved solid (TDS), electrical conductivity (EC), salinity, nitrate, lead (Pb), iron (Fe), cadmium (cd), and zinc (Zn) in the water samples, as well as presumptive Escherichia coli, were assessed using established techniques. World Health Organization acceptable limits for drinking water were used in the evaluation. Lead and cadmium were not detected in the water samples as well as salinity. The pH values observed range from 5.69±0.1- 7.04±0.2. The electrical conductivity values observed range from 37.0±0.2 µs/cm - 114.0±0.5 µs/cm. The total dissolved solids values observed range from 19.0±0.5mg/L - 57.0±0.3mg/L. The nitrate content values observed range from 1.19±0.11 mg/L - 1.54±0.27 mg/L. The phosphate content values observed range from 0.63±0.31 mg/L - 1.93±0.23 mg/L. The chloride content values observed range from 17.65±0.72 mg/L - 9.26±1.06 mg/L. The iron content values observed range from 0.10±0.03 mg/L - 0.37±0.03 mg/L. The zinc content values observed range from 0.01±0.00 mg/L - 0.03±0.01 mg/L. The levels of E. coli present were above the acceptable limits of WHO standard. It is recommended that water from these areas should not be consumed; however, in extreme circumstances of water scarcity, it should be carefully treated before drinking.
